Oncid ID: Tool for Diagnosing Adult Twig Girdlers (Cerambycidae: Lamiinae: Onciderini)
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Genus: Apamauta

Diagnostic Features
  • Description: Elongate-oblong, small to moderate-sized, ranging from about 8–16 mm in length. Integument generally ferrugineous with white and ochraceous pubescence. Head with frons subquadrate, about as wide as width of 3–4 lower eye lobes. Eyes with lower lobes oblong to distinctly narrow. Genae elongate, shorter than lower eye lobes. Antennal tubercles prominent, widely separated; tubercles armed at apex with small projection (females) or with a moderately long, blunt horn (males); antennae slightly longer (females) to nearly twice as long (males) as overall body length; scape clavate, shorter than antennomere IV; antennomere III feebly sinuate, distinctly longer than scape and IV; antennae annulate. Pronotum transverse, roughly cylindrical to conical, slightly wider at base, without lateral tubercles. Elytra with sides nearly straight, slightly attenuate to apex; elytral apices individually rounded; elytra with distinct pale bands or lines; base of elytra with two prominent tubercles at humeri. Basal 1/3 of elytra with dense punctation, surface coarsely punctate. Procoxae without projection (females) or with distinct curved hook (males). Mesosternal process with apex subtruncate to feebly emarginate. Metafemora moderate in length, about 1/3 as long as elytra.

  • The combination of the following characters will help to distinguish this genus: distinctly narrow eyes, widely separated; base of elytra with two prominent tubercles at humeri; and elytra with sides nearly straight, slightly attenuate to apex.

  • Similar genus/genera: superficially resembles Bucoides and Hesycha.
Geographic Distribution
  • South America (Brazil)
Host Plants/Trees
  • Cyatheaceae (Cyathea sp.)
Girdling Behavior
  • Unknown, however, this genus has been reared from dead branches (Martins, 1975).
Notes

The genus Apamauta currently contains one species:
  Apamauta lineolata Thomson, 1868 [♀ specimen]
  Apamauta lineolata Thomson, 1868 [type specimen]
  • This species is usually collected during the day (M.A. Monné, personal communication).

    Generic Synonymies
    • None
    Selected References
     

    Apamauta lineolata
    ♀ specimen
    © E.H. Nearns

     

    © 2011-2015 Nearns, E.H., Lord, N.P., and K.B. Miller
    The University of New Mexico and Center for Plant Health Science and Technology, USDA, APHIS, PPQ.